General Motors got one step closer Tuesday toward its goal of becoming completely carbon neutral by 2040 after workers celebrated the "topping off" of its Spring Hill plant's new paint facility, setting the stage for the plant to become a major hub of electric vehicle production.

Early Tuesday morning, more than 100 workers gathered around a massive steel structure to celebrate the final beam being put into place. Resting on the ground at the base of the new paint facility, the last steel beam collected signatures from workers by the dozen. Atop of the steel beam was a small evergreen tree, which in regards to the topping off ceremony symbolizes that the project's frame was completed without the loss of life, while also serving as a good luck charm.